1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 | FileCheck %s
4 ; This test case was generated from speculate-dbgvalue.c:
6 ; int test1(int getdirt, int dirt) {
14 ; clang speculate-dbgvalue.c -S -emit-llvm -g -O3 -mllvm -disable-llvm-optzns -o - | opt -mem2reg -S
17 ; Function Attrs: nounwind uwtable
18 define i32 @test1(i32 %getdirt, i32 %dirt) #0 !dbg !7 {
19 ; CHECK-LABEL: @test1(
21 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[GETDIRT:%.*]], metadata !12, metadata !DIExpression()), !dbg !15
22 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[DIRT:%.*]], metadata !13, metadata !DIExpression()), !dbg !16
23 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 100, metadata !14, metadata !DIExpression()), !dbg !17
24 ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[GETDIRT]], 0, !dbg !18
25 ; *** We used to get an incorrect "call void @llvm.dbg.value(metadata i32 [[DIRT]], metadata !14, metadata !DIExpression()), !dbg !17" here, before the select. ***
26 ; CHECK-NOT: call void @llvm.dbg.value(metadata i32 [[DIRT]], metadata !14
27 ; CHECK-NEXT: [[RESULT:%.*]] = select i1 [[CMP]], i32 [[DIRT]], i32 100, !dbg !20
28 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[RESULT]], metadata !14, metadata !DIExpression()), !dbg !17
29 ; CHECK-NEXT: ret i32 [[RESULT]], !dbg !21
30 ; CHECK: !12 = !DILocalVariable(name: "getdirt"
31 ; CHECK: !13 = !DILocalVariable(name: "dirt"
32 ; CHECK: !14 = !DILocalVariable(name: "result"
35 call void @llvm.dbg.value(metadata i32 %getdirt, metadata !12, metadata !DIExpression()), !dbg !15
36 call void @llvm.dbg.value(metadata i32 %dirt, metadata !13, metadata !DIExpression()), !dbg !16
37 call void @llvm.dbg.value(metadata i32 100, metadata !14, metadata !DIExpression()), !dbg !17
38 %cmp = icmp ne i32 %getdirt, 0, !dbg !18
39 br i1 %cmp, label %if.then, label %if.end, !dbg !20
41 if.then: ; preds = %entry
42 call void @llvm.dbg.value(metadata i32 %dirt, metadata !14, metadata !DIExpression()), !dbg !17
43 br label %if.end, !dbg !21
45 if.end: ; preds = %if.then, %entry
46 %result.0 = phi i32 [ %dirt, %if.then ], [ 100, %entry ]
47 call void @llvm.dbg.value(metadata i32 %result.0, metadata !14, metadata !DIExpression()), !dbg !17
48 ret i32 %result.0, !dbg !22
51 ; Function Attrs: nounwind readnone speculatable
52 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
54 attributes #0 = { nounwind uwtable }
55 attributes #1 = { nounwind readnone speculatable }
58 !llvm.module.flags = !{!3, !4, !5}
61 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
62 !1 = !DIFile(filename: "speculate-dbgvalue.c", directory: "/foo")
64 !3 = !{i32 2, !"Dwarf Version", i32 4}
65 !4 = !{i32 2, !"Debug Info Version", i32 3}
66 !5 = !{i32 1, !"wchar_size", i32 4}
67 !6 = !{!"clang version 6.0.0"}
68 !7 = distinct !DISubprogram(name: "test1", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
69 !8 = !DISubroutineType(types: !9)
71 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
72 !11 = !{!12, !13, !14}
73 !12 = !DILocalVariable(name: "getdirt", arg: 1, scope: !7, file: !1, line: 1, type: !10)
74 !13 = !DILocalVariable(name: "dirt", arg: 2, scope: !7, file: !1, line: 1, type: !10)
75 !14 = !DILocalVariable(name: "result", scope: !7, file: !1, line: 2, type: !10)
76 !15 = !DILocation(line: 1, column: 15, scope: !7)
77 !16 = !DILocation(line: 1, column: 28, scope: !7)
78 !17 = !DILocation(line: 2, column: 7, scope: !7)
79 !18 = !DILocation(line: 3, column: 15, scope: !19)
80 !19 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 7)
81 !20 = !DILocation(line: 3, column: 7, scope: !7)
82 !21 = !DILocation(line: 4, column: 5, scope: !19)
83 !22 = !DILocation(line: 5, column: 3, scope: !7)